RE: OS .21VG revisit and owners check in!
I have a little over 1 gallon through mine. No problems at all to report yet. Holds a tune very well, starts easy and makes pretty good power. I will admit that it is a little slow on top end. I had it in my truggy for a while but in order to get acceptable speed out of it, I had to set it too lean so it got a little hotter than I like. It's a perfect engine in a buggy, especially for smaller tracks.
My engine would be a good test of the ABL. Break in was 3 easy tanks in the street and turning screws on the 4th. WFO on the 6th tank. We will see. Bought an extra piston kit just in case.